53408737 has 4 divisors (see below), whose sum is σ = 55730880. Its totient is φ = 51086596.

The previous prime is 53408717. The next prime is 53408741. The reversal of 53408737 is 73780435.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53408737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53408696 and 53408705.

It is not an unprimeable number, because it can be changed into a prime (53408717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161037 + ... + 1161082.

It is an arithmetic number, because the mean of its divisors is an integer number (13932720).

Almost surely, 2^53408737 is an apocalyptic number.

It is an amenable number.

53408737 is a deficient number, since it is larger than the sum of its proper divisors (2322143).

53408737 is a wasteful number, since it uses less digits than its factorization.

53408737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322142.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 53408737 is about 7308.1281461124. The cubic root of 53408737 is about 376.5917219347.

It can be divided in two parts, 53408 and 737, that added together give a palindrome (54145).

The spelling of 53408737 in words is "fifty-three million, four hundred eight thousand, seven hundred thirty-seven".